Doubling spreader



July 17; 1923- A. THOMA DOUBLING SPREADER Filed July 15. 1918 Invnfor AndrewT ma Mum 1AM His/fly.

1 To all whom a mag concern? portion or apex in the direction of feedand' Patented July 17, 1923.

' omrsn STAT-Es ANDREW THOMA, or CAMBRIDGE, M-AssAcH'UsE'rrs,"assrcnoa 'ro ABRAHAM SYDE MAN, OF BOSTON,

MASSACHUSETTS.

DOUBLING SPREADER.

Application filed July 15,

Be it known that 1, ANDR W THOMA, a citizen of the UnitedSta-tes, residing at lambridge, in the county of Middlesex-anol State of Massachusetts, have invented certain Improvements in Doubling Spreaders, of which the following. description, in connectionwith the accompanying drawings,

is a specification, like reference characters v on the drawings indicatinglike parts in the several figures.

This invention relates to a method and apparatus of the type whichare designed to apply a coating of rubber compound or other adhesive to one face of aweb of fibrous or textile material and then to apply asecond web to the coated face of the first web thereby producing atwo-ply webor double texture, fabric.

The general object of thelin'ventio'n is to provide a novel, construction and a novel method by means of which the webs of material are more smoothly and intimately associated and the adhesive spreadmore evenly v between them, the spreading taking place along the line Where the twowebs are doubled together. v v

The methodis carried out by, and the construction effected in, the preferred embodiment of the invention illustrated herein by employing a doubling bar across. which the two webs pass from different directions, said bar having a salient web engaging surface arranged to engage the central portion of the webs at a point in advance of thatat which it engages the edge of the websfsaid bar acting to stretch the webs laterally in each direction from the central portion and to efi'ect an even pressure along the line: at

' which the two webs come in contact, and in cases where the character of thecoating means permits, alsoa'n even spreading of: By the the coating along'the same lines. term salient web engagingfa'ce it is to be 15 understood that the web engaging face may be bowed or may be formed to'present straight lines diverging from "the jcentral that while the advaincefportion of the bar preferably is at the center it may be arranged. at either side'of the center to perform the function. above described, within] the spiritand scope of the invention covered by the annexed claims. I

191s. Seria1 N0.244=,84S.

In, order to impart an understanding of the invention, I have illustrated in the drawings a selected embodiment of a machine embodyingthe invention which will now be de scribed,. after which the novel features of the method and apparatusrwill be pointed out in the appended claims.

In the drawings Fig. 1 isa side View of a machine embodying my invention; and

Fig. 2 is a plan of the doubling bar. The machine herein shown comprises a suitable frame 1 on which is mounted two reels or drums 2 and 3 from which are drawn the webs 4 and 5 to be doubled together.

One and usually both of these webs are in pract ce generally already coated on the faces to be brought together with a suitable this coating secures thefina-l adhesion of the two webs. I any suitable or'usual' construction. It is herein illustrated as comprising a roll 7 over which the web passes, and a spreading knlf'e 8 situated directly above the fabric.

and by which the adhesive material is spread on the fabric, said material being located behind the knife, as shown at 9. The knife is secured to a carrier 10 which is vertically adjustable in ways 11 by means of the adjusting screw 12, thereby providing forapplying a coating of any desired thickness.

From the coating device 6, the web 4% passes over. a guide roll 120, thence under 'a dou' bling bar 13, at which point the web 5, is'ap-,

plied to the .web 4, both webs passing across the spreader bar; together. From the doubling bar the two superposed webs pass over the guide roll 14 and then around. a steam heated drum 15 which is journaled in the frame at 16. From the drum the, combined webs pass to a drumor reel 17 on which they are wound. The purpose of the steam 'heated'drum 15 is to dry the coating and cause it toset. Thedrum 17 will preferably be positively driven so as to draw the webs through the machine. i p

The doubling bar 18 is of novel construction and is designed to effect an even pressure This coating devicemay have on thewebs or an even spreading of the coat p ing of adhesive material along the line where the two webs 4. and 5 are doubled together. This bar is shown as ournaled in blocks 18 mounted in ways 19 and capable of adjust ment in the ways by means of adjusting screws 20. The bar 18 has a salient webengaging portion, that is, said bar is constructed so that the portion thereof over which the webs pass will have engagement with the central portion of the webs at a point in advance of that at which it engages the sides 'of the webs. The bar herein shown is constructed so that the web-engaging portion thereof each side of the central point 21 of the bar inclines slightly in the direction of the feeding movement. The doubling bar 13 is so situated that as the webs are drawn thereacr'oss, the central point 21 of the bar will engage the web at a point in advance of that at which the ends 22 have engagement with the web. The result will be that each half of the bar will be acting on the web along a line inclined to a line extending transversely of the web.-

The web 4 of the fabric preferably is bent abruptly downwardly beneath the doubling bar as illustrated in F 1 and the web led from the roll 3around the dou'bling'bar into contact withthe web- 4. By reason of this construction a considerably greater stress is placed upon the centralportion of the web than uponits edges, the stress decreasing gradually from the centerto the edges of the superimposed web.

By reason of this construction a lateral spreading or tension is applied transversely of'the web of cloth and by reason of the d ivergence of the web-engaging surface of the bar from its central portion an even pressure on the webs is exerted to stick them together. This construction of the bar when the character of the coating permits, progressively forces the coating laterally and more evenly distributes the coating from the center toward the edges as the webs are drawn beneath the doubling bar, thus inserting an even spreading of the coating.

The doubling bar is adjustably mounted in the blocks 18 so that it can be turned therein about its axis thereby to move the angular web-engaging edge 23 into different angular positions relative to the direction of movement of the webs. This adjustment is effected by providing the bar with an arm or handle 24; which is rigidly secured thereto and by which it may be turned. The handle is provided with a holding pin adapted-to snap into any one of a plurality of notches 25 formed in the frame, thus holding the bar in adjusted position.

Any suitable Winding mechanism may be provided to draw the webs around the drum 1'5 and wind the same upon the reels 17 and the drums 2 and 3 may be provided with a suitable brake mechanism 26 for applying the desired tension to the respective webs 4 and v I believe I am the first to form double textu-re fabric by applying an adhesive coating to one or both of the faces to be brought together and by thus progressively bringing said webs into juxtaposition and applying pressure, preferably a dragging pressure on lines inclined from the central portion of the webs toward the edges thereof and thus effecting an evening and smoothing of the webs and of the intermediate coating from the center toward the edges, whether or not the coating means employed is capable of flowing laterally under the doubling pressure.

Itis to be understood that the embodiment of the invention disclosed herein is of illustrative character and is not restrictive and that various modifications may be made within the spirit and scope of the following claims. I

Having thus described my invention which I claim as new and desire to secure by Letters Patent is:

1. A doubling spreader, having, in combination, means for supporting a web, means for coating one face thereof, me'ans fo r' progressively superposing another web on the coated face of the first web, and means acting through one of the webs for exerting an evening and smoothing pressure in the direction of the feed of the web upon said webs and said coating along the line where the two webs are doubled together. Y

2. A doubling spreader, having, in combination, means forsupp'orting' a web, means for coating one face thereof, means for progressively superposin'g' another weh on the coated face of the first web, and means acting through one of the webs on a line inclined to the direction of feed to exert an evening and smoothing pressure upon said webs and the coating.

3. A doubling spreadenhaving, in combination means'for feeding a web, means for coating one face thereof, means for applyingiasec- 0nd web to the coated face of the first web, and a doubling bar" across which said webs pass at the pdi-nt where they are doubled together, said bar being arranged to cause each web to be deflected as it passes thereacross, the portion of the bar with which the doubled web contacts'beingshaped to engage theweb ona line inclined to the direction of feed. I p v e 4. A doubling'sp-reader, having, in combination, means for feeding a web, means for coating one face thereof, means for applyin a secondweb to the coated face of the first web,and a doubling-bar across which said webs pass at the" point where they are doubled together, said bar being situated to cause each web to be deflected as'it passes thereecross, and the portion of the bar with which the doubled web contacts being shaped to engage the web on a line inclined to the direction of feed from the central part of the bar toward each edge of the web.

5. A doubling spreader, having, in combination, means for coating a web, means for progressively 'superposing another web on the coated face of the first web, and means for app-lying pressure to said" webs on lines inclined from the central portion of the web toward the edges thereof and extending in the direction of feed of the webs.

s 6. A doublin spreader, having, in combination, means .or feeding a web, means for coating one face thereof, means for applying a second web to the coated face of the first web, a spreader bar engaging the superposed web and situated in such a positionsas to cause the webs to be deflected abruptly downwardly as they pass therebeneath, the portion of the spreader bar engaging the web having a salient to engage the web on a line inclined in the direction of feed from the central portion of the web to the edges thereof. i a

7. A doubling spreader, having, in combi nation, a doubling bar having a salient webengaging face, means for feeding two webs across said face from different angles, and

means for coating one web in advance of said spreader bar.

8. A- doubling spreader, having, combination, means for sup-porting a web, means for coating the web, means for progressively superposing another web of coated material on the first web, and means for. applying pressure upon said webs along a line diverging from the central portion of the web to-' varying the angular position of said face with relation to the direction of movement of the webs.

10. A machine for doubling coated webs,

having, in combination, a doubling bar, vertically movable blocks in which the bar is,

rotatably mounted,-and means for locking the bar from rotation.

In testimony whereof I have signed my 

